package com.itheima.dao.impl;

import com.itheima.dao.BookDao;

/**
 * 构造方法实例化
 */
public class BookDaoImpl implements BookDao {

    public BookDaoImpl() {
        System.out.println("book dao constructor is running ....");
    }

    @Override
    public void save() {
        System.out.println("book dao save ...");
    }
}
